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diff --git a/gr-usrp/README_MULTI_USRP.txt b/gr-usrp/README_MULTI_USRP.txt deleted file mode 100644 index 4ed7a15b3..000000000 --- a/gr-usrp/README_MULTI_USRP.txt +++ /dev/null @@ -1,251 +0,0 @@ -Multi usrp - -With this code you can connect two or more usrps (with a locked clock) and get synchronised samples. -You must connect a (flat)cable between a dboard on the master in RXA and a dboard on the slave in RXA. -You then put one usrp in master mode, put the other in slave mode. - -For a quick start using the examples look at gnuradio-examples/python/multi_usrp/README - -Use the usrp_multi block which is installed by gr-usrp. -instantiate in the following way: - - self.multi=usrp_multi.multi_source_align( fg=self, master_serialno=options.master_serialno, decim=options.decim, nchan=options.nchan ) - -nchan should be 2 or 4. - -You determine which is the master by master_serialno (this is a text string a hexadecimal number). -If you enter a serial number which is not found it will print the serial numbers which are available. -If you give no serial number (master_serialno=None), the code will pick a Master for you. - -You can get a reference to the master and the slave usrp in the following way: - - self.um=self.multi.get_master_usrp() - self.us=self.multi.get_slave_usrp() - -You only need these references for setting freqs/gains or getting info about daughterboards. -Don't use the output directly but use the aligned output from multi.get_master_source_c() and multi.get_slave_source_c() - -You get references to the aligned output samples in the following way: -aligned_master_source_c=self.multi.get_master_source_c() -aligned_slave_source_c=self.multi.get_slave_source_c() - -These blocks have multiple outputs. -output 0 is the sample counter (high bits in I, low bits in Q) -You normally don't need the samplecounters so you can ignore output 0 - -output 1 is the first aligend output channel (if you enable 2 or 4 channels) -output 2 is the second output channel (only if you enable 4 channels) - -so the usefull 4 channels are: -self.aligned_master_chan1=(self.multi.get_master_source_c(),1) -self.aligned_master_chan2=(self.multi.get_master_source_c(),2) -self.aligned_slave_chan1=(self.multi.get_slave_source_c(),1) -self.aligned_slave_chan2=(self.multi.get_slave_source_c(),2) - -The two samplecounters are: -self.aligned_master_samplecounter=(self.multi.get_master_source_c(),0) -self.aligned_slave_samplecounter=(self.multi.get_slave_source_c(),0) - -You can set the gain or tune the frequency for all 4 receive daughetrboards at once: - self.multi.set_gain_all_rx(options.gain) - result,r1,r2,r3,r4 = self.multi.tune_all_rx(options.freq) - -This will only work reliably when you have all the same daughterboards. -Otherwise set all freqs and gains individually. - -You must call self.multi.sync() at least once AFTER the flowgraph has started running. -(This will synchronise the streams of the two usrps) - -This work was funded by Toby Oliver at Sensus Analytics / Path Intelligence. -Many Thanks for making this possible. - -It was written by Martin Dudok van Heel at Olifantasia. - -Quick start multi-usrp: -Unpack, build and install usrp, gnuradio-core and gr-usrp -Versions need to be more recent then 2.7cvs/svn 11 may 2006 - -Make sure usrp/fpga/rbf/rev2/multi*.rbf is installed in /usr/local/share/usrp/rev2/ -Make sure usrp/fpga/rbf/rev4/multi*.rbf is installed in /usr/local/share/usrp/rev4/ -(If in doubt, copy manually) - -build and install gr-wxgui gr-audio-xxx and so on. - -unpack gnuradio-examples. - -There is a gnuradio-examples/python/multi_usrp directory which contains examples and a README - - -Put at least a basic RX or dbsrx board in RXA of the master and RXA of the slave board. -Make sure that the usrps have a serial or unique identifier programmed in their eeprom. -(All new rev 4.1 boards have this) -You can do without a serial but then you never know which usrp is the master and which is the slave. - - -CONNECTING THE CABLES -Now connect the 64MHz clocks between the boards with a short sma coax cable. -(See the wiki on how to enable clock-out and clock-in -http://comsec.com/wiki?USRPClockingNotes ) - -You need one board with a clock out and one board with a clock in. - -You can choose any of the two boards as master or slave, this is not dependant on which board has the clock-out or in. -In my experiments I had fewer problems when the board that has the clock-in will be the master board. - -You can use a standard 16-pole flatcable to connect tvrx, basic-rx or dbsrx boards. -Of this 16pin flatcable only two pins are used (io15 and ground) -For all new daughterboards which use up a lot of io pins you have to use a cable with fewer connections. -The savest is using a 2pin headercable connected to io15,gnd (a cable like the ones used to connect frontpanel leds to the mainboard of a PC) - -If using basic rx board: - Connect a 16-pole flatcable from J25 on basicrx/dbs_rx in rxa of the master usrp to J25 on basicrx/dbsrx in RXA of the slave usrp - Don't twist the cable (Make sure the pin1 marker (red line on the flatcable) is on the same side of the connector (at io-8 on the master and at io8 on the slave.)) - For basic_rx this means the marker should be on the side of the dboard with the sma connectors. - For dbs_rx this means the marker should be on the side of the dboard with the two little chips. - In other words, don't twist the cable, you will burn your board if you do. - -You can also connect a flatcable with multiple connectors from master-J25 to slave1-J25 to slave2-J25 to ... -You will however have to think of something to create a common 64Mhz clock for more then two usrps. - -For all other daughterboards, connect a 2wire cable from masterRXA J25 io15,gnd to slaveRXA J25 io15,gnd - - -So now the hardware is setup, software is setup. Lets do some tests. - -Connect power to both usrps. -unpack the gnuradio_examples somewhere (cvs version later then 11 may 2006) -go to the gnuradio-examples/python/multi_usrp folder. - -Now run - ./multi_usrp_oscope.py -x 12345678 - -It should tell you that usrp 12345678 is not found and tell you which serials are available. - -Now run ./multi_usrp_oscope.py -x actualserialnum -You should now get an oscope with two channels, one is from the master and one is from the slave -It will which show the I-signal from channel 0 of the master usrp and I-signal from channel 0 of the slave usrp. -(For testing connect the same signal source to the inputs of both boards) -The signals should be aligned. -If you click the sync button, it will resync the master and slave (should never be needed) - -Now run -./multi_usrp_oscope.py --help -To see all available options. - - -Now you are ready to do phase-locked aligned signal processing. - -You can also capture to file with: -./multi_usrp_rx_cfile.py - -run ./multi_usrp_rx_cfile.py --help to see all available options. - - -Here follows a brief of the new blocks and (changes)functionality for multi-usrp. -You can also look at the generated documentation in -/usr/local/share/doc/gnuradio-core-X.X -/usr/local/share/doc/usrp-X.X -(Make sure to build and install the documentation, go to the doc directory of the sourcetree and issue make doc; make install) - - -gnuradio-examples: -new/changed files: -multi_usrp/multi_usrp_oscope.py -multi_usrp/multi_usrp_rx_cfile.py - - -gnuradio-core: -gr.align_on_samplenumbers_ss (int nchan,int align_interval) - -align several complex short (interleaved short) input channels with corresponding unsigned 32 bit sample_counters (provided as interleaved 16 bit values) - -Parameters: - nchan number of complex_short input channels (including the 32 bit counting channel) - align_interval interval at which the samples are aligned, ignored for now. - -Pay attention on how you connect this block It expects a minimum of 2 usrp_source_s with nchan number of channels and as mode usrp_prims.bmFR_MODE_RX_COUNTING_32BIT enabled. This means that the first complex_short channel is an interleaved 32 bit counter. The samples are aligned by dropping samples untill the samplenumbers match. - -files: -gnuradio-core/src/lib/general/gr_align_on_samplenumbers_ss.cc -gnuradio-core/src/lib/general/gr_align_on_samplenumbers_ss.h -gnuradio-core/src/lib/general/gr_align_on_samplenumbers_ss.i - - -gr-usrp - added _write_fpga_reg_masked - added usrp_multi.py - new usrp_multi block which can instantiate two linked usrps as master and slave and alignes their output. - It has a sync() function which should be called AFTER the flowgraph has started running. - bool sync(); - \brief Call this on a master usrp to sync master and slave by outputing a sync pulse on rx_a_io[15]. - The 32 bit samplecounter of master and slave will be reset to zero and all phase and buffer related things in the usrps are reset. - Call this only after the flowgraph has been started, otherwise there will be no effect since everything is kept in reset state as long as the flowgraph is not running. - \returns true if successfull. - -files: -configure.ac -src/Makefile.am -src/usrp1.i -src/usrp1_source_base.cc -src/usrp1_source_base.h -src/usrp_multi.py - -usrp-0.11cvsmulti: -usrp: - new constant bmFR_MODE_RX_COUNTING_32BIT (could also be added as extra mode like FPGA_MODE_COUNTING_32BIT) - Use this for the mode parameter when creating a usrp when you want to use the master/slave setup or if you want to use the 32 bit counter for other things, like testing with gr.check_counting_s(True) - - added register FR_RX_MASTER_SLAVE - added bitno and bitmaskes: - bmFR_MODE_RX_COUNTING_32BIT - - bitnoFR_RX_SYNC - bitnoFR_RX_SYNC_MASTER - bitnoFR_RX_SYNC_SLAVE - - bitnoFR_RX_SYNC_INPUT_IOPIN 15 - bmFR_RX_SYNC_INPUT_IOPIN (1<<bitnoFR_RX_SYNC_INPUT_IOPIN) - bitnoFR_RX_SYNC_OUTPUT_IOPIN 15 - bmFR_RX_SYNC_OUTPUT_IOPIN (1<<bitnoFR_RX_SYNC_OUTPUT_IOPIN) - - added _write_fpga_reg_masked() - added new toplevel folder usrp_multi - added usrp_multi.v and master_control_multi.v - added new MULTI_ON and COUNTER_32BIT_ON defines - If these are turned off usrp_multi.v will behave exactly as usrp_std.v - - added setting_reg_masked.v - changed reset behaviour of phase_acc.v and rx_buffer.v - - changed generate_regs.py to handle bm and bitno defines - - -files: -firmware/include/fpga_regs_standard.v -firmware/include/fpga_regs_common.h -firmware/include/generate_regs.py -firmware/include/fpga_regs_standard.h -host/lib/usrp_basic.h -host/lib/usrp_basic.cc -host/lib/usrp_standard.h -fpga/rbf/Makefile.am -fpga/toplevel/usrp_std/usrp_std.v -fpga/toplevel/usrp_multi/usrp_multi.esf -fpga/toplevel/usrp_multi/usrp_multi.vh -fpga/toplevel/usrp_multi/usrp_std.vh -fpga/toplevel/usrp_multi/usrp_multi_config_2rxhb_0tx.vh -fpga/toplevel/usrp_multi/usrp_multi_config_2rxhb_2tx.vh -fpga/toplevel/usrp_multi/usrp_multi.v -fpga/toplevel/usrp_multi/usrp_multi.qpf -fpga/toplevel/usrp_multi/usrp_multi.psf -fpga/toplevel/usrp_multi/usrp_multi_config_2rx_0tx.vh -fpga/toplevel/usrp_multi/usrp_multi.qsf -fpga/toplevel/usrp_multi/usrp_multi_config_4rx_0tx.vh -fpga/toplevel/usrp_multi/usrp_multi.csf -fpga/toplevel/usrp_multi/.cvsignore -fpga/sdr_lib/rx_buffer.v -fpga/sdr_lib/master_control_multi.v -fpga/sdr_lib/phase_acc.v -fpga/sdr_lib/setting_reg_masked.v - - |